Seat frame



FIG. 1 is a front perspective view of a first embodiment of a seat frame comprising the new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a front view of an alternative embodiment of the new design having indeterminate width. 

The ornamental design for a seat frame, as shown and described. 